Shape of different striae patterns A longitudinal between setae e1-e1 and between f1-f1, in O. randriamasii Gutierrez (redrawn from original description, Gutierrez 1967) B longitudinal between/posterior to setae f1-f1, in O. orthius Rimando (redrawn from re-description, Beard et al. 2003) C irregular longitudinal between/posterior to setae f1-f1 D oblique with slightly forming V-shaped pattern between setae f1-f1, in O. turbbelli Beard and Walter (redrawn from original description, Beard et al. 2003). Scale bars: 50 μm (B, C, D); 100 μm (A).